73 lines
1.7 KiB
Markdown
73 lines
1.7 KiB
Markdown
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# 1.8" TFT Display Setup Guide
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## Overview
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The 1.8" TFT display (128x160) is used as the primary visual interface for the Aniker anchor alarm system. It displays GPS coordinates, anchor status, and alarm conditions.
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## Display Specifications
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### Technical Details
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- Display Type: TFT LCD
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- Resolution: 128x160 pixels
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- Interface: SPI
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- Controller: ST7735 (typical)
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- Viewing Angle: ~160°
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- Operating Voltage: 3.3V
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- Backlight: LED
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- Color Depth: 16-bit (65K colors)
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### Physical Characteristics
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- Screen Size: 1.8 inches diagonal
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- Active Area: ~28mm x 35mm
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- Module Size: ~34mm x 45mm (approximate)
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- Interface: 8-pin connection
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## Hardware Setup
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### Power Requirements
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- Logic Voltage: 3.3V
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- Current Draw: ~100mA with backlight on
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- Backlight Control: PWM capable
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### Pin Connections
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1. **Power Pins**
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- VCC → ESP32 3.3V
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- GND → ESP32 GND
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- BLK → ESP32 GPIO4 (Backlight control)
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2. **SPI Interface**
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- SCL → ESP32 GPIO18 (SPI Clock)
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- SDA → ESP32 GPIO23 (MOSI)
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- RES → ESP32 GPIO21 (Reset)
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- DC → ESP32 GPIO22 (Data/Command)
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- CS → ESP32 GPIO5 (Chip Select)
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### Display Orientation
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- The display can be mounted in 4 orientations (0°, 90°, 180°, 270°)
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- Software configuration available for orientation adjustment
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- Default orientation: Portrait (0°)
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## Software Integration
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### Basic Configuration
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```rust
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// Example display configuration
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let spi = SPIInterface::new(
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spi,
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gpio23, // MOSI
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gpio18, // SCK
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gpio5, // CS
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gpio22, // DC
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gpio21, // RST
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);
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let display = ST7735::new(
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spi,
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gpio4, // BLK
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false, // is_inverted
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160, // height
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128, // width
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);
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```
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### Display Layout
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The screen is organized into several regions:
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